Automatic feeder for jointers



E. D. CHURCH AUTOMATIC FEEDER FOR JOINTERS Filed July 24, 1922 2 Sheets-Sheet l atto/m1121347 E. D. CHURCH AUTOMATIC FEEDER FOR JOINTERS Filed July 24. 1922 2 Sheets-Sheet 2 flttofbnuf I Patented @et 9, i923.

EDGAR D. CHURCH, OF SAGINAW, MICHIGAN, ASSIGNOR TO JACKSON & CHURCHCOIJI- PANY, F SAGINAW', MICHIGAN, A. CORPORATION F MICHIGAN.

AUTOMATIC FEEDER ron .romanas Application `filed July 24, 1922. Serial No. 577,133.

To all whom t may concern Be it known that I, EDGAR D. CHURCH, a citizen of the United StatesV of America, residing at Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Automatic Feeders for Jointers, of which the following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to Wood planing machines and particularly to that type known as jointers which are designed to form a true surface on the work.

An object of the invention is to provide simple and effective means for advancing the work to the planing cutter while at the same time holding the work in a fixed plane and avoiding any pressure on the work suiicient to spring the same and which would result in subsquent distortion.

Another object is to pro-vide a series of strong and durable fingers which have a plurality of points arranged in a circular arc at the ends thereof for facilitating engagement with the work.

Another object is to provide a series of fingers which may be easily and readily in.- verted so as to prolongthe vlife thereof. V.Another object is to provide an efficient and practical device which is simple in con` struction and which can be manufactured at a very low cost.

With the above and other objects in view the invention consists in certain novel features of construction, combination and ar rangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying` drawings:

Figure 1 is a side elevation of a portion of a jointer to which my inmprovement vis.

applied; y

Figure 2 is a cross-section showing one of the cross-bars of the holder and feeder in elevation;

Figure 3 is a plan view of 'Figure 2; Figure 4 is a detail sectional view taken on the Vline 4 4 of Figure 3;

one of the fingers;

Figure 6 is a detail sectional view takenk like characters of reference designate corre- Figure 5 is a detail perspective view of spondinfr parts throughout the several views. tne numeralV 1 designates the bed' or table of the jointer over which the work is fed to the planing cutter 2. A plurality of vertically adjustable standards 3 entend above the table and are Vsecured to a frame 4 which supports the feeder. y

The feeder includes an endless carrier having a plurality of spaced bars 5 secured to an endless chain 6 which is trained around sprocket wheels 'Y'. Any suitable means may beemployed for driving either one of the sprocket wheels to actuate the 'endless carrier. A plurality of bars 8 are arranged above the bars 5 and are parallel thereto, The bars 5 and 8 are spaced apart by means of the tubular spacers 9 and are securedto each other by means of bolts or rivets 10 extending through the spacers. Thev bars 5 and 8 have aligned openings therein, preferably of polygonal form for engaging correspondingly shaped fingers 11 which engage the work. The opposite ends of each finger arekprovided with a plurality of spacedtransversely extending points 12 which are arranged in a circulararc to facilitate engagementfwith the work. `The ingersare provided intermediate their ends with cross bores 13 and 1 4 which are spaced "a predetermined distance from the ends of the fingers. Split keys 16 `are normally inserted in the bores 14 andr engage the bars 5, the bores 18 being used only when the fingers are inverted. Coil springs '17 are sleeved upon the fingersk intermediate the bars 5 and 8, the upper ends of saidsprings abutting against the bars 8 while the iower ends thereof ,engagel the split keys 16.

With the construction as described it is only necessary to withdraw the split keys to remo-ve the fingers in case the points at one end thereof become worn or broken, or toy replace a broken or defective spring. rIhis operation andthe operation of replacing the fingers will occupy only a short time,

Aso

so that replacement canbev made without holding the machine out of work for any length ofvr time.r

What I claim as my invention is:

1. In a feeder for jointers, the combinationwith an endless carrier, of a series of `fingers carried by said carrier Vhaving va plurality of points arranged in afcircular arc for engagementwith'the work. ,K

2. In a feeder for jointers, the combina` tion with an endless carrier,`of a series of fingers carried by said Carrier having a plurality of spaced paralled transversely extending points for engagement 'with the work.

3. ln a feeder for jointers, the eombination with an endless Carrier, of Vseries of fingers carried by said carrier having a plurality of transversely extending points for engagement with the work, certain Of said points being shorter than the others.

ll. ln a 'feeder for jointers, the Combination with an endless carrier, of a series of lingers carried by said Carrier having a plu` rality of points for engagement with the worlnthe peints at the sides of said lingers being shorter than the Yintermediate points.

5. In a feeder for jointers, the combina- 'ion w'th an endless carrier, of a series of VCross bars therefor, a series of spring pressed pins slidably engaging said eross bars and yieldably pressed towards the work, each of said pins being formed with a plurality of points at its lower end arranged in the are of a Circle to facilitate engagement with the work.

6. ln a feeder for jointers, the combina tion with an endless carrier` including a .series of cross-bars, a Vseries of lingers carried by said bars and having' points at one end thereof for engagement with the work, and means engaging one'portionrof said fingers andnormally in engagement with said bars for Vlimiting the downward movement of said fingers, said fingers, being Yinvertible and having points at the opposite end Vthereof for engagement with the work, the means aforesaid being adapted to engage said bars, and another portion of said hngers when the latter are inverted to limit the downward movement thereof. n A

7. ln a feeder for jointers, the Combination with an endlessearrier ineluding a series of cross-bars, a series of fingersrarried by said bars and having points at one end thereof for engagement with the wor r, said v ingers having spaced openings therethrough,

meansengageable with one of Vthe Aopenings in saidlingers and normally in engagement with said bars for limiting Vthe downward said `lingers when the latter are inverted to l limit the downward movement thereof.

8. ln a feeder for jointers, the combination with an endless carrier including a. series of cross-bars, a series'of bars arranged parallel to and spaced from said bars, lingers extending through said parallel bars and hav-V ing points at one end thereof for engage-V ment with the work, removable means env gaging one portion of said fingers and adapted to eneaoe the bars of one series to limit the downward movement of said fingers, and yieldable means engaging said lingers and said removable means for normally retaining the latter in engagement with the bars of one series. Y

9. n a feeder for jointers, the combination with an endless carrier including a series of cross-bars, a series of bars arranged parallel to and spaced from said bars, fingers extending through saidparallel bars and having points at one end thereof for engagement with the worln'freinovable means engaging on-e portion of said fingers and adapted to engage the bars of one series to limit the downward movement ofy said fiiigers, yieldable means engaging saidlingers and said removable means for normally retaininothe latter in enUaGement with the bars of one series, said fingers being adapted EDGAR D. CHURCH. 

